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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Posing questions regarding valve seat trouble in cast iron, wrought steel and various engine models.

Identifier  WestWitteringFiles\O\April1926-June1926\  Scan24
Date  16th April 1926
  
ORIGINAL

HS.{Lord Ernest Hives - Chair} )
TO RG.{Mr Rowledge} ) FROM R.{Sir Henry Royce}
E.{Mr Elliott - Chief Engineer} ) (Le CanadelHenry Royce's French residence.)

C. to BJ. WOR.{Arthur Wormald - General Works Manager}
BY.{R.W. Bailey - Chief Engineer} DA.{Bernard Day - Chassis Design} PN.{Mr Northey}

R2/M16.4.26.
Rec'd at W.W. morning of 19.4.26.

X8060
X2764

PHANTOM & OTHER VALVES.

Very surprised after so many years to hear so
seriously of valve seat trouble in cast iron and wrought steel.
(1) What is the experience of others?
(2) My Phantom after 7,000 miles does not seem to
have altered at all.
(3) Can lubrication oil in Silver Ghost improve it?
(4) Would cutting the cams away in aero engines so
as to run with .020" clearance prevent running with
too little clearance: we intended this at one time?
(5) Are engines with inserted valve seats (say
Lions and air-cooled) any better: if so which material?
(6) Many times I have feared it was due to lift
path being curved.

R.{Sir Henry Royce}
  
  


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